土壤有效硅含量及其与土壤理化性状的相关研究

STUDY ON THE AVAILABLE AILICON CONTENT AND THE RELATIONSHIP BETWEEN IT AND THE PROPERTIES OF PHYSICS AND CHEMISTRY OF SOILS

东北地区主要土壤有效硅平均含量为３９２ｍｓ／ｋｓ，含量范围在９７．０－８９７．４ｍｇ／ｋｇ之间，且黑土＞褐土＞草甸土＞棕壤＞白浆土。大部分黑土和褐土属于较高水平，而白浆土、草甸土和棕壤偏低。分析土壤有效硅与土壤理化性状的相关关系，得知有效硅含量与土壤的ｐＨ及粘粒含量达极显著和显著水平，此外，有效硅含量还与成土过程有关。

The average amount of available silicon of main soils in the Northeast Region is 392mg/Kg,range from 97.0 to 897.4mg/Kg,and Black Soil>Cinnamon soil>Meadow soil>Brown earth>Albic soil.The level of available silicon is higher in Black soil and Cinnamon soil, but lower in Albic soil、Meadow soil and Brown earth.There is a correlation between available silicon content and pH value or clay content of soils,except it is influenced by pedogensis.